Academic interest in plant natural products with insecticidal properties has continued to grow in the past 20 years, while commercialization of new botanical insecticides and market expansion of existing botanicals has lagged considerably behind. Insecticides based on pyrethrum and neem (azadirachtin) continue to be standard bearers in this class of pesticides, but globally, their increased presence is largely a consequence of introduction into new jurisdictions. Insecticides based on plant essential oils are just beginning to emerge as useful plant protectants. Some countries (such as Turkey, Uruguay, the United Arab Emirates, and Australia) have relaxed regulatory requirements for specific plant extracts and oils, while in North America and the European Union, stricter requirements have slowed progress toward commercialization of new products. Botanicals are likely to remain niche products in many agricultural regions and may have the greatest impact in developing countries in tropical regions where the source plants are readily available and conventional products are both expensive and dangerous to users.

中文翻译：

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20世纪的植物杀虫剂是否兑现了自己的承诺？

在过去的20年中，对具有杀虫特性的植物天然产物的学术兴趣一直在增长，而新型植物杀虫剂的商业化和现有植物药的市场拓展却远远落后。基于除虫菊和印em（印za素）的杀虫剂仍然是此类农药的标准携带者，但在全球范围内，它们的存在量增加很大程度上是引入新管辖区的结果。基于植物精油的杀虫剂刚刚开始作为有用的植物保护剂出现。一些国家（例如土耳其，乌拉圭，阿拉伯联合酋长国和澳大利亚）放宽了对特定植物提取物和油类的监管要求，而在北美和欧盟，更严格的要求减缓了新产品商业化的进度。